A macroeconometric framework for monetary policy evaluation: A case study of Pakistan

This paper attempts to establish the quantitative importance of the various channels of monetary transmission by constructing, estimating and simulating a small macroeconometric model of Pakistan's monetary sector, while using data from the monetary statistics and the monetary survey of the State Bank of Pakistan over 1976–2007. The paper elucidates that the key feature of the study of monetary policy in Pakistan has been preoccupied with neglect either of the demand or the supply function of money and shows how this may lead to imprecise policy actions and mistaken conclusions. Accordingly, we delineate the transmission mechanism of monetary policy by taking into consideration all structural money demand and money supply linkages along with the historically implied identifying assumption in the framework of a marginalized macroeconometric model. The within-sample and out-of-sample evaluations of the model are found satisfactory. The paper presents results of three policy simulations from the estimated model that highlight the impact of alternative monetary policy instruments on the monetary variables under a rule-based and a discretionary policy environment. We find that (i) the SBP subscribes to an unannounced monetary policy rule, (ii) the determination of the policy rate under the announced rule environment stabilizes the monetary sector in that convergence to full equilibrium is smooth and rapid, (iii) a 100 bps reduction in the discount rate, ceteris paribus, decreases money supply by 4.97%, and (iv) the long term implication of reducing (increasing) the reserve requirement ratio on time (demand) deposits, ceteris paribus, is only higher inflation. Finally, we establish that a 100 bps increase in interest rate increases money supply by 3.14% in full equilibrium.     

Even more on monetary policy in a small open economy

It is well known that in a small open economy with full capital mobility and a fixed exchange rate, monetary policy is ineffective in influencing real output (e.g. the works of Fleming [Int. Monetary Fund Staff Pap. 9 (1962) 369.] and Mundell [Can. J. Econ. Polit. Sci. 29 (1963) 475.]). However, Wu [Int. Rev. Econ. Finance 8 (1999) 223.] finds that when the credit channel is added to this model, monetary policy can have real effects under a fixed exchange rate system. This conclusion hinges on the assumption that open market operations have no effect on foreign exchange reserves of the central bank when evaluating how a change in monetary policy affects the loan market. This assumption is incorrect because under a fixed exchange rate regime, the quantity of foreign reserves becomes endogenous in the model. It is shown that when this assumption is relaxed, monetary policy is still ineffective in influencing output under a fixed exchange regime, even with an operative credit channel.     

The user cost of money

Prior imputations of a price to monetary asset services have not been basedupon an explicit assumption structure or an explicit model. We rigorously derive a unique user cost formula for that price; our results are consistent with Donovan's (1977) formula.     

Macroeconomic transitions and the transmission mechanism: Evidence from Turkey

This paper investigates changes to the macroeconomic transmission mechanism in Turkey following a major reform of monetary policy in the early 2000s. We use a Threshold VAR (TVAR) framework to test for and then estimate a model with endogenous transitions between regimes. We detect two regimes, with a clear transition between them in 2003–4. The pre-reform regime is characterized by high inflation, passive monetary policy and persistent responses to shocks. The post-reform regime is characterized by low inflation, active and credible monetary policy and markedly less persistent responses to shocks. Using a model that contains sufficient variables to capture diverse transmission mechanisms, working through the real exchange rate, domestic credit and monetary policy, we find evidence of sharp changes in transmission mechanisms. Post-reform, the response of Turkey to macroeconomic shocks has changed to be similar to those in other modern, market-orientated economies.     

Hayek’s monetary theory and policy: A note on alleged inconsistency

Challenging the dominant view, we claim that Hayek’s monetary views did not significantly change over his lifetime. The prevalent perception of early Hayek as a money stream stabilizer and late Hayek as a price level stabilizer is attributable to an unjustified normative interpretation of Hayek’s positive analysis. We argue that in his contributions to monetary theory, Hayek took the goals of monetary policy as exogenously given and analysed the efficiency of different means of achieving them. Hayek’s allegedly inconsistent transformation from a critic to an advocate of price level stabilization is explained by a change of issues under his focus, rather than by a change in his positive views. We also claim that Hayek was always aware that every practical monetary policy involves difficult trade-offs and that he was therefore reluctant to impose his own value judgments on what people should strive for.     

A note on the societal benefits of illiquid bonds

Abstract Kocherlakota (2003) provides an example of a monetary economy where efficiency is enhanced with the introduction of a nominally risk‐free bond that is specifically designed to be illiquid. The societal benefit of an illiquid bond in his example, however, is transitory, and he does not characterize an optimal policy. I use an analytically tractable framework to characterize an optimal intervention and to show that the purported benefits of an illiquid bond market persist in a steady state.     

On Monetary Expansion, Terms of Trade and Economic Growth*

In a recent paper Roberts (1978) has extended Ramanathan's model (1975) to a two-sector, two-currency and two-country neoclassical growth model with flexible exchange rates. Under the assumption that the consumption good is relatively capital intensive, Roberts obtains two important propositions: an increase in domestic monetary expansion will increase the domestic overall capital intensity, decrease the foreign overall capital intensity, and worsen the terms of trade for the country importing the investment good; an increase in domestic monetary expansion may increase or decrease the level of trade. In this paper, we add to and generalize these results by using a simple yet thorough comparative statics analysis without the factor intensity condition.¹It will be seen that the complexity and ambiguity of Roberts' results are substantially reduced.     

Investment,interest rate rules,and equilibrium determinacy

Summary. By adding endogenous investment to a flexible-price, money-in-the-utility-function model, this paper studies the role that physical capital plays in stabilizing the real side of the economy when the monetary authority follows interest-rate feedback rules. We show that with inelastic labor supply equilibrium uniqueness is ensured under both active and passive monetary policies. For the case where money affects both preferences and technology, the uniqueness result remains true under active monetary policy. With endogenous labor supply, the uniqueness result holds again regardless of the stance of monetary policies for the case with separable leisure, but indeterminacy remains likely under both active and passive monetary policies when leisure is nonseparable.Received: 19 December 2001, Revised: 12 May 2003, JEL Classification Numbers: E52, O42.We are grateful to Jess Benhabib and an anonymous referee for helpful comments and suggestions. Correspondence to: C.K. Yip     

Costly Information Acquisition and Delegation to a "Liberal" Central Banker

This paper develops a model of monetary policy in which the central banker can acquire costly information about a supply shock. It is shown that, with this assumption, it may be optimal for society to delegate to a "weight-liberal" central banker, a result which contrasts with that of Rogoff (1985). This result points at a limitation of Rogoff's argument. It may also explain why the issue of delegating monetary policy to an independent and "weight-conservative" central banker often is politically controversial.     

Monetary policy arithmetic: reconciling theory with evidence

Abstract.  Empirical evidence indicates that, in countries with low inflation rates, a permanent decrease in inflation rate either has no impact on capital stock and output (superneutrality) or causes them to fall moderately. Existing budget arithmetic models of monetary policy cannot deliver superneutrality. In this paper, we conduct a budget arithmetic analysis of monetary policy using a money demand specification – money in the utility function – that is new to this literature. We find that one simple assumption about utility from money delivers superneutrality, while a more general assumption delivers departures from superneutrality in the direction consistent with the evidence. JEL classification: E60, E13     

汇率制度与货币政策——发展中国家和小国经济的思考

本文中,我们将研究在资本市场对外开放及汇率固定条件下货币政策的管理机制问题。我们的目标是探讨货币政策能否在此种情况下继续独立而有效地稳定国内经济。为此,我们建议两种制度上的约束。给定这些约束,我们证明货币政策仍然有效。同时,本文讨论了此种制度选择对发展中国家和小国经济的意义。     

Monetary policy and heterogeneous expectations

This paper studies the implications for monetary policy of heterogeneous expectations in a New Keynesian model. The assumption of rational expectations is replaced with parsimonious forecasting models where agents select between predictors that are underparameterized. In a Misspecification Equilibrium agents only select the best-performing statistical models. We demonstrate that, even when monetary policy rules satisfy the Taylor principle by adjusting nominal interest rates more than one for one with inflation, there may exist equilibria with Intrinsic Heterogeneity. Under certain conditions, there may exist multiple misspecification equilibria. We show that these findings have important implications for business cycle dynamics and for the design of monetary policy.     

Asymmetric information, financial intermediation, and business cycles

Summary. This incorporates a debt contracting problem with asymmetric information into a standard monetary business cycle model. The model incorporates a limited participation assumption in order to induce a liquidity effect of monetary shocks and propagate monetary disturbances. The model economy shows that a positive money supply shock generates a decrease in nominal interest rates and an increase in output level. Asymmetric information amplifies the response of capital to the money supply shock, but does not propagate them in other ways. When the monetary shock is an innovation in reserve requirements, it induces a persistent response of the economy. Received: March 20, 1998; revised version: 1 April 1998     

Bank liquidity risk and monetary policy. Empirical evidence on the impact of Basel III liquidity standards

We extend the literature on the bank lending channel in two aspects. First, rather than following the literature by analyzing the impact of banks’ liquidity (measured via their asset portfolio) on monetary policy transmission, we study the role of banks’ actual liquidity risk, as measured by the Basel III liquidity regulations. Second, we investigate the effect of complying with the Basel III liquidity standards on monetary policy transmission. We use highly detailed bank-level data from Luxembourg for the period 2003q1--2010q4. Our findings are that monetary policy transmission works its way through small banks that also have a large maturity mismatch, as measured by the Net Stable Funding Ratio. In contrast, large banks with a small maturity mismatch increase their lending following a monetary policy shock, which confirms existing results that Luxembourg’s banks are liquidity providers to the European market. Based upon in-sample predictions and upon simulated data from an optimization model that takes the banks’ business models into account, we conclude that the bank lending channel will no longer be effective once banks adhere to the new Basel III liquidity regulations.     

The business cycle with nominal contracts

Summary In this paper we study the quantitative implications of nominal wage contracts for business cycle fluctuations. We address this issue using a model economy based on the neoclassical growth model supplemented by the assumption that cash is needed to purchase goods. We consider a variation of the standard recursive competitive equilibrium concept that is intended to capture the important features of wage contracting. We use this equilibrium construct to address three issues. First, we consider whether monetary shocks, propagated by nominal contracts, constitute a viable alternative to technology shocks as a source of aggregate fluctuations. Our results suggest that, while monetary shocks and nominal rigidities succeed in causing output volatility of the required magnitude, the resulting data have properties that are inconsistent with several key features of U.S. data. Second, we consider how the behavior of the economy varies with contract length. We find that the volatility induced by both monetary and technology shocks increases sharply with contract length. Finally we consider how much rigidity would be necessary to match the volatility of U.S. output. We find that only a very small amount of rigidity would be necessary to cause output volatility of the magnitude observed.We have received helpful comments from David Chapman, Paul Gomme, Jeremy Greenwood, Gary Hansen, Michael Keane, Tim Kehoe, Lee Ohanian, Edward Prescott, and Warren Weber. The usual disclaimer applies. This research is supported in part by NSF Grant SES-8921346 and the John M. Olin Foundation.     

“适应性学习”下人民币汇率的货币模型

传统的汇率货币模型建立在理性预期基础上,无法解释现实中的汇率波动。本文放松了理性预期的假定,并引入适应性学习来考察汇改后人民币汇率的货币模型。结果表明:在适应性学习引入之前,货币模型预测能力比不上简单的随机游走模型;而在引入之后,其预测能力大幅改善,很好地模拟了汇率实际波动。因此传统的货币模型并没有完全失效,引入适应性学习后仍然适宜于刻画汇改后人民币汇率的短期走势。     

Stochastic mechanisms in settings without monetary transfers: The regular case

We analyze relative performance of stochastic and deterministic mechanisms in an environment that has been extensively studied in the literature on communication (e.g., [Vincent P. Crawford, Joel Sobel, Strategic information transmission, Econometrica 50 (6) (1982) 1431-1451]) and optimal delegation (e.g., [Bengt Holmström, On the theory of delegation, in: M. Boyer, R.E. Kihlstrom (Eds.), Bayesian Models in Economic Theory, North-Holland, 1984, pp. 115-141]): a principal-agent model with hidden information, no monetary transfers, and single-peaked preferences. We demonstrate that under the common assumption of quadratic payoffs and a certain regularity condition on the distribution of private information and the agent's bias, the optimal mechanism is deterministic. We also provide an explicit characterization of this mechanism.     

BEN BERNANKE AND THE ZERO BOUND

From 2000 to 2003, when Ben Bernanke was a professor and then a Fed Governor, he wrote extensively about monetary policy at the zero bound on interest rates. He advocated aggressive stimulus policies, such as a money‐financed tax cut and an inflation target of 3%–4%. Yet, after U.S. interest rates hit zero in 2008, the Fed under Chairman Bernanke took more cautious actions. This paper asks when and why Bernanke changed his mind about zero‐bound policy. The answer, at one level, is that he was influenced by analysis from the Fed staff that was presented at the Federal Open Market Committee (FOMC) meeting of June 2003. This answer raises another question: why did the staff's views influence Bernanke so strongly? I seek answers to this question in the social psychology literature on group decision‐making. (JEL E52, E58)     

Duration of bankruptcy proceedings and monetary policy effectiveness

A common assumption in well-known costly-state-verification frameworks is that when a borrower defaults, creditors receive a payoff immediately (after incurring bankruptcy costs). While this assumption enhances tractability, it is unrealistic given the considerable delays in the actual practice of bankruptcy. In this paper, I identify the duration of bankruptcy proceedings as an additional source of friction in financial markets and investigate the relationship between this friction and the effectiveness of monetary policy by using U.S. state-level data. Consistent with the commonly-observed positive relationship between the degree of standard financial frictions and the amplitude of macroeconomic responses, I find that U.S. monetary policy is most effective in states with longer bankruptcy proceedings.     

Long run determinants and short run dynamics of inflation in Tunisia

The essential idea of this study is to analyse the origins of inflation at short and long runs in Tunisia relying on annual data during the period 1962 to 2003. We also suggest a model that has a structure determined by monetary and structural factors, and estimated by Johansen's cointegration technique. The empirical results show that inflation is explained by mixed factors: monetary ones such as money supply, the interest rate and the real effective exchange rate; and structural ones like the nominal average annual wage rate, the import prices and the real output. The analysis aims at pointing out the long run determinants of inflation and studying its short run dynamics.